The Number

81648

Eighty-One Thousand Six Hundred and Forty-Eight

In Base 21 Unovigesimal Is

8h3021

The numbers with a 21 subscript use Base 21 Unovigesimal notation.

For more familiar numbers: See Eighty-One Thousand Six Hundred and Forty-Eight in Base 10 Decimal

Nearby Numbers

Positive, nonzero integers within three units

81645
8h2i21
Eighty-One Thousand Six Hundred and Forty-Five in Base 21 Unovigesimal
81646
8h2j21
Eighty-One Thousand Six Hundred and Forty-Six in Base 21 Unovigesimal
81647
8h2k21
Eighty-One Thousand Six Hundred and Forty-Seven in Base 21 Unovigesimal
81649
8h3121
Eighty-One Thousand Six Hundred and Forty-Nine in Base 21 Unovigesimal
81650
8h3221
Eighty-One Thousand Six Hundred and Fifty in Base 21 Unovigesimal
81651
8h3321
Eighty-One Thousand Six Hundred and Fifty-One in Base 21 Unovigesimal

Scientific Notation

Scientific notation expresses a quantity as the product of its significand with 10 raised to an integer exponent.

8.1648e4

Reciprocal

A number multiplied with its reciprocal is one.

0.00028093je93je9521

The reciprocal of 81648 in Base 21 Unovigesimal.

Palindrome?

A numerical palindrome has the same value when all of its digits are reversed.

The number 8h3021 is not a palindrome.

Not A Prime Number

A prime number is a positive integer that is divisible only by itself and one.

Eighty-one thousand six hundred and forty-eight is a composite number with 70 total factors (including 1 and itself).   See primes in Base 21 Unovigesimal

A Composite

Composites have more than just these two factors.

Eighty-one thousand six hundred and forty-eight is a composite number with 70 total factors (including 1 and itself).

Prime Factors

The prime factors of a positive integer are the integers that divide it exactly and are also prime.

The number eighty-one thousand six hundred and forty-eight has the following 3 prime factors:

2
221
Two in Base 21 Unovigesimal
3
321
Three in Base 21 Unovigesimal
7
721
Seven in Base 21 Unovigesimal

Prime Factorization

The prime factorization of a positive integer is the unique list of prime factors together with their multiplicities

2214 · 3216 · 7211 = 8h3021

Base Conversions

The number eighty-one thousand six hundred and forty-eight in 35 different bases